The Solution:
Given that:
[tex]\begin{gathered} m(x)=\pi x^2-2\text{ }\sqrt[]{2x^2}\ldots eqn(1) \\ \text{and} \\ g(m)=1.50m\ldots eqn(2) \end{gathered}[/tex]
Then the expression that represents the cost of the mulch based on the radius of the circle can be obtained by putting eqn(1) into eqn(2).
So, we have that:
[tex]1.50(\pi x^2-2\sqrt[]{2x^2})[/tex]
Therefore, the correct answer is [option 2]
